[supertrope]

I agree that those "AX9000" marketing numbers are fake.

>This obviously depends on your hardware and environment

This is the key point. If you have:

A high link rate client.

A high link rate access point.

Line of sight between the two, same room.

A low utilization and interference channel.

No one else heavily using your Wi-Fi.

Non-bad drivers for Wi-Fi.

Then TCP throughput of about 1/2 to 2/3 link rate is possible. 1200 Mbps link rate yields 600-700 Mbps speed tests. Some applications have small TCP windows so their throughput drops on 5 ms latency wireless versus <1 ms wired.

Yes if you plug you always get 920 Mbps throughput.